Control element

Abstract

A control element is provided, in particular for a motor vehicle, including a material through which light can be passed and whish is provided with at least one opaque coating provided with symbols, and having a transparent enamel layer on the coating, wherein nanoparticles are introduced into the enamel layer and the coating and the enamel layer are removed by means of a laser.

1 . A control element comprising:
 a translucent material that is provided with at least one opaque coating;   a symbol and a transparent lacquer layer being provided on the opaque coating; and   nanoparticles incorporated into the lacquer layer,   wherein the coating and the lacquer layer are removed in certain areas by a laser.   
   
   
       2 . The control element according to  claim 1 , wherein the nanoparticles have a diameter from 10 nm to 10 μm and are present at a volume concentration of 0.01% to 10% and include metal oxides. 
   
   
       3 . The control element according to  claim 1 , wherein the transparent lacquer layer has a thickness of less than 100 μm. 
   
   
       4 . The control element according to  claim 1 , wherein the translucent material is a translucent plastic, a polycarbonate, a polymethylmethacrylate (PMMA), a transparent ceramic, a sapphire, or a glass. 
   
   
       5 . The control element according to  claim 1 , wherein the opaque coating is a metal layer or a pigmented paint layer that is processed a laser. 
   
   
       6 . The control element according to  claim 6 , wherein the metal layer has a thickness of <5 μm and is applied in one or more layers by a PVD or CVD method. 
   
   
       7 . The control element according to  claim 6 , wherein the metal layer is produced by a reactive PVD method and is present as a metal oxide, metal carbide, or metal nitride layer. 
   
   
       8 . The control element according to  claim 1 , wherein the translucent material is provided with an additional adhesion layer, in particular a primer paint, under the coating. 
   
   
       9 . The control element according to  claim 1 , wherein the control element is a control element for a motor vehicle.